Fire protection wet system riser configuration

Ben Stewart of Western States Fire Protection describes the necessary components of a wet system riser

[@DarrenWhiteUSA]

I wish nick was still here

[@fredbarnich8145]

Nice video, well explained,thanks for sharing

[@alvaroampudia4382]

is this like a college class??? i've seen your other videos and these are really well explained!!

[@fitter5426]

Ok I’m alittle confused with the pipe schedule for the preaction systemsnext to the wet system on that header. Why is it a 2 inch valve them right on top of the valve there a concentric reducer/increaser and the pipe size goes up then ties in to what looks like 4” along with another system? I’ve been in the sprinkler fitters union for 15 years running a service van for the last 10 and I’ve never seen that before.

[@smokeGR20]

Good but also wrong on couple discussions..